Let's divide 640931 by 9
We're looking to find how many times 9 goes into 640931.

Going ahead to step 1:
The number 9 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 9

Going ahead to step 2:
9 can be fit into 64 7 times, resulting in a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 7.0
The remainder is 1 after subtracting 63 from 64.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 9

Let's proceed to step 3:
10 divided by 9 is 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 71.0
Subtract 9 from 10 to get 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 9

On to step 4:
19 divided by 9 is 2 with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 712.0
If we subtract 18 from 19, we get 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 9

Step 5:
The number 9 fits into 13 1 times, leaving a remainder of 4.
The next digit of our result is 1. 
Result so far: 7121.0
If we take 9 away from 13, we end up with 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 9

Advancing to step 6:
If we divide 41 by 9, we get 4 and a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 71214.0
Subtracting 36 from 41 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
If we divide 50 by 9, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 71214.5
If we take 45 away from 50, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
When dividing 50 by 9, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 71214.55
If we take 45 away from 50, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

In conclusion, the division gives 71214.55 with a balance of 0.005.